.f-alldivcenter{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    width: 100%;
    height: 100vh;
}
.f-row{
    display: flex;
    flex-direction: row;
}
.f-col{
    display: flex;
    flex-direction: column;
}
.f-center{
    justify-content: center;
    align-items: center;
}
.f-alicenter{
    align-items: center;
}
.f-justcenter{
    justify-content: center;
}
.f-warp{
    flex-wrap: wrap;
}
